Open AccessCost optimisation of the design of reinforced concrete flat slab to BS8110
Author(s) -
Simon Olawale,
Murtadha Adekilekun Tijani,
M.A. Kareem,
A. M. Ogungbire,
O.O. Alabi
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/640/1/012052
Subject(s) - slab , strips , structural engineering , column (typography) , framing (construction) , optimal design , reinforced concrete , matlab , computer science , engineering , algorithm , connection (principal bundle) , machine learning , operating system
The optimum design of reinforced concrete flat slab could reduce its construction cost because it is usually employed in large floor area without any structural framing beams. The design consideration is based on the provision of BS8110 separating the slab into middle and column strips. The optimisation is to find the optimum slab thickness with least cost. The use of the in-built genetic algorithm function of MATLAB software was employed to minimise the design at various steel ratios. The constraints applied were non-linear and thus required a lengthy iteration cycles before convergence. The objective function for either strip is treated separately without any coupling in line with the design philosophy of BS8110. The optimum thicknesses for the middle and column strips are 130mm and 140mm respectively. The reinforcement ratios for the optimum design were also established to be 2% and 3.5% for the middle and column strips respectively.